CN105073932A - Temporary fixing double-sided adhesive tape and temporary fixing method for workpiece using same - Google Patents
Temporary fixing double-sided adhesive tape and temporary fixing method for workpiece using same Download PDFInfo
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- CN105073932A CN105073932A CN201480018793.8A CN201480018793A CN105073932A CN 105073932 A CN105073932 A CN 105073932A CN 201480018793 A CN201480018793 A CN 201480018793A CN 105073932 A CN105073932 A CN 105073932A
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- adhesive tape
- sided adhesive
- binder layer
- crystalline polymers
- chain crystalline
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
- C09J2301/1242—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape the opposite adhesive layers being different
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/412—Additional features of adhesives in the form of films or foils characterized by the presence of essential components presence of microspheres
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
Abstract
This temporary fixing double-sided adhesive tape is provided with: a base material; a first adhesive compound layer that adheres to a pedestal; and a second adhesive compound layer that adheres to a workpiece. The first adhesive compound layer includes a first pressure sensitive adhesive compound, a first side chain crystalline polymer, and a foaming agent. The second adhesive compound layer includes a second pressure sensitive adhesive compound and a second side chain crystalline polymer. This temporary fixing method for a workpiece is provided with a step for heating the temporary fixing double-sided adhesive tape to a prescribed temperature and peeling the workpiece along with the temporary fixing double-sided adhesive tape from the pedestal and a step for heating the temporary fixing double-sided adhesive tape to a prescribed temperature and peeling the workpiece from the temporary fixing double-sided adhesive tape.
Description
Technical field
The present invention relates to the method for temporarily fixing of machined object machined object being temporarily fixed at the temporary fixed double-sided adhesive tape on pedestal and using this adhesive tape.
Background technology
As the method for temporarily fixing be temporarily fixed at by machined object on pedestal, there will be a known wax (for example, see patent documentation 1).
But if be temporarily fixed on pedestal by wax by machined object, then wax can residue in machined object and pedestal respectively when being peeled off from pedestal by machined object, therefore need the matting with an organic solvent waited.
On the other hand, as other method of temporarily fixing, there will be a known double-sided adhesive tape.As double-sided adhesive tape, there will be a known a kind of double-sided adhesive tape (A), wherein, the binder layer of one side is conventional acrylic adhesive layer, and the binder layer of another side is the fopam gluing oxidant layer add whipping agent in the acrylic adhesive layer of routine after.
For double-sided adhesive tape (A), respectively acrylic adhesive layer is attached at pedestal, foamed adhesive laminating is invested machined object, and machined object is temporarily fixed on pedestal.The stripping of double-sided adhesive tape (A) is carried out according to following step.First, after machined object being carried out to attrition process etc., double-sided adhesive tape (A) is heated to whipping agent and expands or the temperature of foaming, the bounding force of fopam gluing oxidant layer is reduced.Then, after machined object is peeled off from double-sided adhesive tape (A), double-sided adhesive tape (A) is peeled off from pedestal.
If but use this double-sided adhesive tape (A), then when attrition process etc., the concavo-convex meeting being derived from whipping agent is transferred to machined object, and the problem having productive rate to reduce.
In addition, as other double-sided adhesive tape, there will be a known a kind of double-sided adhesive tape (B), it is the binder layer of one side is conventional acrylic adhesive layer, and the binder layer of another side comprises thermal adhesive layer.Thermal adhesive layer is the binder layer that its bounding force of temperature containing pressure-sensitive caking agent and Side-chain crystalline polymers and more than the fusing point of Side-chain crystalline polymers can reduce.
Acrylic adhesive layer is attached to pedestal, thermal adhesive laminating is attached to machined object by double-sided adhesive tape (B) respectively, and is temporarily fixed on pedestal by machined object.The stripping of double-sided adhesive tape (B) is carried out according to following step.First, after machined object being carried out to attrition process etc., machined object is peeled off from pedestal together with double-sided adhesive tape (B).Then, double-sided adhesive tape (B) is heated to the temperature of more than the fusing point of Side-chain crystalline polymers, the bounding force of thermal adhesive layer is reduced, machined object is peeled off from double-sided adhesive tape (B).
But, if use this double-sided adhesive tape (B), separability when then being peeled off from pedestal together with double-sided adhesive tape (B) by machined object is not good, therefore needs the interface of such as scraper (spatula) etc. being inserted acrylic adhesive layer and pedestal to peel off starting point to be formed.And there are the following problems: cause machining object damaged thus productive rate reduction because forming stripping starting point time institute externally applied forces.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 6-69324 publication
Summary of the invention
Invent problem to be solved
Problem of the present invention can by machined object with good yield and the method for temporarily fixing of the temporary fixed double-sided adhesive tape peeled off simply and the machined object that uses this adhesive tape for providing.
For solving the means of problem
Temporary fixed double-sided adhesive tape of the present invention possesses: membranaceous base material; The one side being laminated in above-mentioned base material also can be attached at the 1st binder layer of pedestal; And the another side being laminated in above-mentioned base material also can be attached at the 2nd binder layer of machined object, wherein, above-mentioned 1st binder layer contains the 1st pressure-sensitive caking agent, the 1st Side-chain crystalline polymers and whipping agent, and the temperature of the bounding force of above-mentioned 1st binder layer more than the fusing point of above-mentioned 1st Side-chain crystalline polymers can reduce, above-mentioned 2nd binder layer contains the 2nd pressure-sensitive caking agent and the 2nd Side-chain crystalline polymers, and the temperature of the bounding force of above-mentioned 2nd binder layer more than the fusing point of above-mentioned 2nd Side-chain crystalline polymers can reduce.
The method of temporarily fixing of machined object of the present invention has following operation: from the state be temporarily fixed on by machined object by above-mentioned of the present invention temporary fixed double-sided adhesive tape on pedestal, above-mentioned temporary fixed double-sided adhesive tape be heated to more than the fusing point of above-mentioned 1st Side-chain crystalline polymers and make the temperature that above-mentioned whipping agent expands or foams, by the operation that above-mentioned machined object is peeled off from above-mentioned pedestal together with above-mentioned temporary fixed double-sided adhesive tape; Above-mentioned temporary fixed double-sided adhesive tape is heated to the temperature of more than the fusing point of above-mentioned 2nd Side-chain crystalline polymers, by the operation that above-mentioned machined object is peeled off from above-mentioned temporary fixed double-sided adhesive tape.
Invention effect
According to the present invention, have machined object with good yield and the effect peeled off simply.
Accompanying drawing explanation
Fig. 1 be the temporary fixed double-sided adhesive tape representing one embodiment of the present invention schematically illustrate figure.
Fig. 2 (a) ~ (c) is the process picture sheet of the method for temporarily fixing of the machined object representing one embodiment of the present invention.
Embodiment
The temporary fixed double-sided adhesive tape > of <
The temporary fixed double-sided adhesive tape (hereinafter also referred to " adhesive tape ") of one embodiment of the present invention is described in detail referring to Fig. 1.
As shown in Figure 1, the adhesive tape 1 of present embodiment possesses: base material 2, at stacked the 1st binder layer 3 of the one side 21 of base material 2, at the 2nd stacked binder layer 4 of the another side 22 of base material 2.
(base material)
The base material 2 of present embodiment is film (film) shape.So-called membranaceous, be not limited to membranaceous, in the scope not undermining present embodiment effect, for even membranaceous or sheet (sheet) shape is also included within interior concept.
As the constituent material of base material 2, such as can enumerate the synthetic resins such as polyethylene, polyethylene terephthalate, polypropylene, polyester, polymeric amide, polyimide, polycarbonate, vinyl-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-polypropylene multipolymer, polyvinyl chloride, in illustrated synthetic resins, be preferably polyethylene terephthalate.
The base material 2 of present embodiment can be any one in individual layers or polylayer forest, and its thickness is preferably 5 ~ 250 μm, is more preferably 12 ~ 188 μm, more preferably 25 ~ 100 μm.In order to promote the adaptation to the 1st binder layer 3 and the 2nd binder layer 4, can in the one side 21 of base material 2 and another side 22 embodiment as surface treatments such as Corona discharge Treatment, Cement Composite Treated by Plasma, sandblasting, chemical milling process, primary coat process.
(the 1st binder layer)
For for stacked the 1st binder layer 3 of the one side 21 of base material 2, its clung body is pedestal, and it contains the 1st pressure-sensitive caking agent, the 1st Side-chain crystalline polymers and whipping agent.
1st pressure-sensitive caking agent has fusible polymkeric substance, its concrete example can enumerate natural rubber caking agent, synthetic rubber caking agent, phenylethylene/butadiene latex base caking agent, acrylic acid series caking agent etc., in these illustrated caking agents, preferred acrylic acid series caking agent.
As the monomer forming acrylic acid series caking agent, such as, can enumerate (methyl) 2-EHA, (methyl) acrylate that (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) butyl acrylate etc. have the alkyl of carbon number 1 ~ 12; (methyl) vinylformic acid 2-hydroxy methacrylate, (methyl) vinylformic acid 2-hydroxy propyl ester, the own ester of (methyl) vinylformic acid 2-hydroxyl etc. have (methyl) acrylate etc. of hydroxyalkyl, and these can use a kind or be mixed with two or more.(methyl) acrylate represents acrylate or methacrylic ester.
As the concrete composition of acrylic acid series caking agent, the multipolymer etc. by making 2-EHA, methyl acrylate and vinylformic acid 2-hydroxy methacrylate be polymerized gained can be enumerated.In addition, above-mentioned each monomer preferably with 2-EHA be 42 ~ 62 weight parts, the ratio polymerization of methyl acrylate to be 30 ~ 50 weight parts and vinylformic acid 2-hydroxy methacrylate be 3 ~ 13 weight parts.
Polymerization process is not particularly limited, such as, can adopt solution polymerization process, mass polymerization, suspension polymerization, emulsion polymerization method etc.When adopting solution polymerization process, as long as above-mentioned monomer is mixed in solvent and stirs 2 ~ 10 hours at about 40 ~ 90 DEG C.
As the weight-average molecular weight of polymkeric substance, i.e. the 1st pressure-sensitive caking agent of the above-mentioned monomer gained of polymerization, be preferably 150,000 ~ 500,000, be more preferably 200,000 ~ 350,000.Thus, when adhesive tape 1 can be suppressed to peel off from pedestal, the 1st binder layer 3 remains in pedestal, can suppress to produce cull.In addition, the cohesive force because of the 1st binder layer 3 can be suppressed too high and the bounding force of the 1st binder layer 3 that causes reduces.Weight-average molecular weight is measured, by the measured value of gained with the value of polystyrene conversion with gel permeation chromatography (GPC) by polymkeric substance.
On the other hand, the 1st Side-chain crystalline polymers is the polymkeric substance with fusing point.So-called fusing point is the temperature making originally to become with the specific part of the polymkeric substance of ordered arrangement alignment state of disarray by certain equilibrium process, is by the value of differential scanning calorimeter (DSC) at the condition determination mensuration gained of 10 DEG C/min.
1st Side-chain crystalline polymers is being less than the temperature crystallization of above-mentioned fusing point, and temperature phase transition more than fusing point show mobility.That is, the 1st Side-chain crystalline polymers has corresponding temperature change and thermo-sensitivity reversibly in crystalline state and flow state.Thus, when being less than the temperature of fusing point, the 1st Side-chain crystalline polymers is crystalline state, and thus the 1st binder layer 3 can guarantee bounding force.In addition, during temperature more than fusing point, the 1st Side-chain crystalline polymers display mobility, therefore can hinder the binding property of above-mentioned 1st pressure-sensitive caking agent, result can reduce the bounding force of the 1st binder layer 3.
The fusing point of the 1st Side-chain crystalline polymers is preferably more than 45 DEG C and is less than 55 DEG C.Thus, when room temperature (23 DEG C), the 1st Side-chain crystalline polymers is crystalline state, thus can guarantee the bounding force of the 1st binder layer 3 in room temperature, result lifting operation.
Above-mentioned fusing point adjusts by the composition etc. changing the 1st Side-chain crystalline polymers.As the monomer of formation the 1st Side-chain crystalline polymers, (methyl) acrylate such as can enumerating the straight-chain alkyl with carbon number more than 16, (methyl) acrylate, the polar monomer etc. of alkyl with carbon number 1 ~ 6.
As (methyl) acrylate of straight-chain alkyl with carbon number more than 16, such as, can enumerate (methyl) Process Conditions of Cetane Acrylate, (methyl) acrylate that (methyl) octadecyl acrylate, (methyl) vinylformic acid 20 ester, (methyl) Behenyl acrylate etc. have the wire alkyl of carbon number 16 ~ 22; As (methyl) acrylate of alkyl with carbon number 1 ~ 6, such as, can enumerate (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) butyl acrylate, (methyl) Ethyl acrylate etc.; As polar monomer, such as, can enumerate the ethylene unsaturated monomers etc. that ethylene unsaturated monomers, (methyl) vinylformic acid 2-hydroxy methacrylate, (methyl) vinylformic acid 2-hydroxy propyl ester, the own ester of (methyl) vinylformic acid 2-hydroxyl etc. that vinylformic acid, methacrylic acid, β-crotonic acid, methylene-succinic acid, toxilic acid, fumaric acid etc. have a carboxyl have hydroxyl.These can use a kind or be mixed with two or more.
1st Side-chain crystalline polymers can be the polymkeric substance obtained by least making (methyl) acrylic ester polymerization having carbon number more than 16, be preferably the straight-chain alkyl of carbon number more than 18 in above-mentioned each monomer.Above-mentioned each monomer preference (methyl) acrylate as the straight-chain alkyl to have carbon number more than 16 is 30 ~ 100 weight parts, has the ratio polymerization that (methyl) acrylate of the alkyl of carbon number 1 ~ 6 is 0 ~ 70 weight part, polar monomer is 0 ~ 10 weight part.
As the concrete composition of the 1st Side-chain crystalline polymers, the multipolymer etc. obtained by polymeric acrylic acid 20 diester, octadecyl acrylate, methyl acrylate and vinylformic acid can be enumerated.In addition, above-mentioned each monomer preferably with Behenyl acrylate be 35 ~ 45 weight parts, octadecyl acrylate is 30 ~ 40 weight parts, the ratio polymerization of methyl acrylate to be 15 ~ 25 weight parts and vinylformic acid be 1 ~ 10 weight part.
Polymerization process is not particularly limited, such as, can adopt solution polymerization process, mass polymerization, suspension polymerization, emulsion polymerization method etc.When adopting solution polymerization process, as long as above-mentioned monomer is mixed in solvent and stirs 2 ~ 10 hours at about 40 ~ 90 DEG C.
The weight-average molecular weight of the 1st Side-chain crystalline polymers is preferably 3,000 ~ 30,000, is more preferably 5,000 ~ 20,000, and more preferably 6,000 ~ 11,000.Thus, cull is produced when adhesive tape 1 can be suppressed to peel off from pedestal.In addition, the 1st Side-chain crystalline polymers, when the above Temperature displaying mobility of fusing point, can reduce the bounding force of the 1st binder layer 3 fully.Weight-average molecular weight measures the 1st Side-chain crystalline polymers, by gained measured value with the value of polystyrene conversion with GPC.
1st Side-chain crystalline polymers is preferably the ratio mixture of 0.5 ~ 10 weight part according to converting relative to the 1st pressure-sensitive caking agent 100 weight part in solids component, more preferably according to the ratio mixture of 0.5 ~ 5 weight part.Thus, the 1st Side-chain crystalline polymers, when the above Temperature displaying mobility of fusing point, can reduce the bounding force of the 1st binder layer 3 fully.
On the other hand, whipping agent can adopt any one in conventional chemical foaming agent and pneumatogen.Chemical foaming agent comprises organic system whipping agent and the inorganic system whipping agent of heat decomposition type and response type.
The organic system whipping agent of heat decomposition type; such as can enumerate: various azo-compound (Cellmic C 121 etc.), nitroso compound (N; N '-dinitrosopentamethylene tetramine etc.), hydrazine derivative [4; 4 '-oxygen base two (benzenesulfonyl hydrazine) etc.], Urea,amino-(semicarbazide) compound (hydrazo diformamide (hydrazodicarbonamide) etc.), triazo-compound, tetrazole compound etc., the organic system whipping agent of response type such as can enumerate isocyanate compound etc.
The inorganic system whipping agent of heat decomposition type such as can be enumerated: hydrocarbonate/carbonate (sodium bicarbonate etc.), nitrite/hydride etc., and the inorganic system whipping agent of response type such as can be enumerated: Sodium Hydrogen Carbonate and sour combination, hydrogen peroxide and saccharomycetic combination, zinc powder and sour combination etc.
Pneumatogen such as can be enumerated: the aliphatic hydrocarbons such as butane, heptane, hexane; The chlorinated hydrocarbons such as ethylene dichloride, methylene dichloride; The organic system pneumatogens such as fluorine chlorinated hydrocarbons such as cfc; The inorganic system such as air, carbon dioxide, nitrogen pneumatogen etc.
In addition, other whipping agent can adopt thermal expansivity particulate, i.e. microballoon (microballoon) whipping agent of micro encapsulation.In microballoon whipping agent, enclose the heating bulking substances be made up of solid, liquid or gas in the inside of the polymer shell be made up of thermoplasticity or thermosetting resin.In other words, microballoon whipping agent possesses: median size is the hollow form polymer shell of micron dimension (micro-order) and the heating bulking substances of inclosure polymer shell inside.Microballoon whipping agent makes volumetric expansion more than 40 times by heating, and obtains the foam of separated foam form.Therefore, compared with common whipping agent, microballoon whipping agent has the sizable characteristic of expansion ratio.Such microballoon whipping agent can use commercially available product, " 461DU20 " of such as EXPANCEL Inc. etc.
Whipping agent is preferably the ratio mixture of 5 ~ 30 weight parts according to converting relative to the 1st pressure-sensitive caking agent 100 weight part in solids component, more preferably according to the ratio mixture of 10 ~ 30 weight parts.Thus, whipping agent, when expanding or foam, can reduce the bounding force of the 1st binder layer 3 fully.
Whipping agent expands or the temperature of foaming is generally the temperature higher than the fusing point of the 1st Side-chain crystalline polymers.In addition, whipping agent expands or the temperature of foaming is generally less than 180 DEG C, is preferably and starts to expand or foam and substantially foam completely at 120 DEG C at 90 DEG C.
The median size of whipping agent is not particularly limited, and is usually preferably 5 ~ 50 μm, is more preferably 5 ~ 20 μm, more preferably 5 ~ 10 μm.Median size is the value measuring gained with particle size distribution device.
Will by this whipping agent and the one side 21 being laminated in base material 2 containing above-mentioned 1st pressure-sensitive caking agent together with the 1st binder layer 3 of the 1st Side-chain crystalline polymers, as long as such as have the coating fluid of the 1st pressure-sensitive caking agent, the 1st Side-chain crystalline polymers and whipping agent to be coated on the one side 21 of base material 2 by coating machine etc. by adding in a solvent and dry.Coating machine such as can be enumerated: blade coating machine, roll coater, calender courter, comma coating machine, gravure coater, rod coater etc.
The thickness of the 1st binder layer 3 is preferably 10 ~ 50 μm, is more preferably 10 ~ 30 μm, more preferably 15 ~ 25 μm.
In addition, in the 1st binder layer 3, the various additives such as such as linking agent, tackifier, fluidizer, antiaging agent, UV light absorber can be added, in illustrative additive, preferably add linking agent.Linking agent such as can enumerate isocyanate compound etc.It is preferably the ratio interpolation linking agent of 0.1 ~ 10 weight part according to converting in solids component relative to the 1st pressure-sensitive caking agent 100 weight part, more preferably add linking agent according to the ratio of 0.1 ~ 5 weight part, the preferred ratio according to 0.1 ~ 2 weight part adds linking agent further.
In above-mentioned 1st binder layer 3, the particularly preferred mixed ratio of the 1st pressure-sensitive caking agent, the 1st Side-chain crystalline polymers, whipping agent and linking agent can be enumerated: they are the 1st pressure-sensitive caking agent with mass ratio range: the 1st Side-chain crystalline polymers: whipping agent: linking agent=100: 1 ~ 3: 10 ~ 15: 0.5 ~ 1.
(the 2nd binder layer)
For for stacked the 2nd binder layer 4 of the another side 22 of above-mentioned base material 2, its to be clung body be machined object, the thermal adhesive layer that can reduce containing the 2nd pressure-sensitive caking agent and the 2nd Side-chain crystalline polymers, temperature bounding force more than the fusing point of the 2nd Side-chain crystalline polymers.
2nd its weight-average molecular weight of pressure-sensitive caking agent is preferably greater than the weight-average molecular weight of above-mentioned 1st pressure-sensitive caking agent.Thus, the cohesive force of the 2nd binder layer 4 promotes further compared with the cohesive force of the 1st binder layer 3, thus keeps the confining force of machined object to promote, and result can suppress machined object to come off from adhesive tape 1 when being peeled off from pedestal together with adhesive tape 1 by machined object.
The weight-average molecular weight of the 2nd pressure-sensitive caking agent is preferably 300,000 ~ 700,000, is more preferably 400,000 ~ 600,000, in this numerical range, preferably make the weight-average molecular weight of the 2nd pressure-sensitive caking agent be greater than the weight-average molecular weight of the 1st pressure-sensitive caking agent.Thus, can suppress to produce cull when being peeled off from adhesive tape 1 by machined object, and above-mentioned effect can be obtained.
The composition of the 2nd pressure-sensitive caking agent etc. can be identical or different with above-mentioned 1st pressure-sensitive caking agent.
Other formation of 2nd pressure-sensitive caking agent is identical with above-mentioned 1st pressure-sensitive caking agent, thus omits the description.
On the other hand, in the same manner as above-mentioned 1st Side-chain crystalline polymers, the fusing point of the 2nd Side-chain crystalline polymers is preferably more than 45 DEG C and is less than 55 DEG C.In addition, the weight-average molecular weight of the 2nd Side-chain crystalline polymers is preferably 3,000 ~ 30,000, is more preferably 5,000 ~ 20,000, and more preferably 6,000 ~ 11,000.2nd Side-chain crystalline polymers is preferably the ratio mixture of 0.5 ~ 10 weight part according to converting relative to the 2nd pressure-sensitive caking agent 100 weight part in solids component, more preferably according to the ratio mixture of 0.5 ~ 5 weight part.
The fusing point, composition, weight-average molecular weight, blend amount etc. of the 2nd Side-chain crystalline polymers can be identical or different with above-mentioned 1st Side-chain crystalline polymers.
Other formation of 2nd Side-chain crystalline polymers is identical with above-mentioned 1st Side-chain crystalline polymers, thus omits the description.
Above-mentioned the 2nd its thickness of binder layer 4 containing the 2nd pressure-sensitive caking agent and the 2nd Side-chain crystalline polymers is preferably less than the thickness of above-mentioned 1st binder layer 3.In other words, the thickness of the 1st binder layer 3 is preferably greater than the thickness of the 2nd binder layer 4.In the formation of present embodiment, the thickness of the 1st binder layer 3 is greater than the thickness of the 2nd binder layer 4.By formation like this, when machined object being attached to pedestal by adhesive tape 1, the 1st binder layer 3 being attached at the thick-layer of pedestal can along pedestal surfaces shape diffusion also enlarge active surface, the thus temporal hold state of Absorbable organic halogens machined object.In addition, because the 2nd binder layer 4 being attached at the thin layer of machined object is not easy to ooze out from the peripheral part of adhesive tape 1, thus can suppress because the 2nd unnecessary binder layer 4 oozes out and pollute machined object.
The thickness of the 2nd binder layer 4 is preferably 5 ~ 40 μm, is more preferably 5 ~ 20 μm, more preferably 5 ~ 15 μm, in this numerical range, preferably make the thickness of the 1st binder layer 3 be greater than the thickness of the 2nd binder layer 4.
In addition, in the same manner as the 1st binder layer 3, preferably in the 2nd binder layer 4, add linking agent.Linking agent is preferably the ratio interpolation of 0.1 ~ 10 weight part according to converting in solids component relative to the 2nd pressure-sensitive caking agent 100 weight part, and more preferably add according to the ratio of 0.1 ~ 5 weight part, the preferred ratio according to 0.1 ~ 1 weight part is added further.
In above-mentioned 2nd binder layer 4, the particularly preferred proportioning of the 2nd pressure-sensitive caking agent, the 2nd Side-chain crystalline polymers and linking agent can be enumerated: they are the 2nd pressure-sensitive caking agent with mass ratio range: the 2nd Side-chain crystalline polymers: linking agent=100: the ratio of 1 ~ 5: 0.4 ~ 0.6.
Other formation of 2nd binder layer 4 is same with above-mentioned 1st binder layer 3, thus omits the description.
The adhesive tape 1 of above-mentioned present embodiment also possesses: 1st demarcation membrane 5 stacked on the surface 31 of the 1st binder layer 3 and 2nd demarcation membrane 6 stacked on the surface 41 of the 2nd binder layer 4.Thus, the surface 31 of the 1st binder layer 3 and the surface 41 of the 2nd binder layer 4 can be protected respectively.
As the 1st demarcation membrane 5 and the 2nd demarcation membrane 6, such as, can enumerate the film be made up of polyethylene, polyethylene terephthalate etc. having the releasing agents such as silicone (silicone), fluorine in surface coated.In addition, the 1st demarcation membrane 5 and the respective thickness of the 2nd demarcation membrane 6 are preferably 10 ~ 110 μm.
1st demarcation membrane 5 and the 2nd demarcation membrane 6 composition each other, thickness etc. may be the same or different.In the present embodiment, the 1st demarcation membrane 5 is the polyethylene films having silicone in surface coated, and the 2nd demarcation membrane 6 is the polyethylene terephthalate film having silicone in surface coated.In addition, in present embodiment, the thickness of the 1st demarcation membrane 5 is greater than the thickness of the 2nd demarcation membrane 6.
In the adhesive tape 1 of present embodiment, preferably the 1st binder layer 3 is 2 ~ 16N/25mm 180 ° of stripping strengths of 23 DEG C, is more preferably 6 ~ 12N/25mm.Thus, the bed knife to pedestal can be obtained.180 ° of stripping strengths of the 1st binder layer 3 are according to the atmosphere temperature mensuration value to 180 ° stripping strength gained of polyethylene terephthalate film of JISZ0237 at 23 DEG C.
In addition, in the adhesive tape 1 of present embodiment, preferably the 2nd binder layer 4 is 0.5 ~ 10N/25mm 180 ° of stripping strengths of 23 DEG C, is more preferably 1 ~ 3.5N/25mm.Thus, the bed knife to machined objects such as sapphire glass can be obtained.180 ° of stripping strengths of the 2nd binder layer 4 are according to the atmosphere temperature mensuration value to 180 ° stripping strength gained of sapphire glass of JISZ0237 at 23 DEG C.
The method of temporarily fixing > of < machined object
Then, to use the situation of above-mentioned adhesive tape 1, the method for temporarily fixing of the machined object of an embodiment of the invention is described in detail with reference to Fig. 2.
In the present embodiment, first as shown in Fig. 2 (a), by adhesive tape 1, machined object 200 is temporarily fixed on pedestal 100, from this state, as shown in Fig. 2 (b), machined object 200 is peeled off from pedestal 100 together with adhesive tape 1.
Specifically, machined object 200 can adopt the machined object for using and be not particularly limited, but is preferably as the raw-material sapphire glass of LED-baseplate etc.The machined object 200 of present embodiment is sapphire glass.In addition, pedestal 100 such as can enumerate the pedestal of pottery system.
As shown in Fig. 2 (a), machined object 200 is by being attached at pedestal 100 respectively, the 2nd binder layer 4 being attached at the adhesive tape 1 of the state of machined object 200 and being temporarily fixed on pedestal 100 by the 1st binder layer 3.Thus, even if carry out attrition process etc. to machined object 200, the concavo-convex productive rate reduction being transferred to machined object 200 and causing being derived from whipping agent also can be suppressed.
Then, adhesive tape 1 be heated to more than the fusing point of above-mentioned 1st Side-chain crystalline polymers and make the temperature that whipping agent expands or foams.Thus, the temperature of the 1st Side-chain crystalline polymers more than fusing point can show mobility, and whipping agent can expand or foam, and therefore can reduce the bounding force of the 1st binder layer 3 fully.As shown in Fig. 2 (b), its result, for machined object 200 can be peeled off smoothly from pedestal 100 along arrow A direction together with adhesive tape 1, therefore can suppress damaged and cause the reduction of productive rate because applying the machined object 200 that causes of external force when peeling off.Heating unit as heating tape 1 such as can enumerate well heater etc.
In addition; bounding force along with the 1st binder layer 3 reduces; 2nd binder layer 4 usually can reach the temperature of more than the fusing point of contained the 2nd Side-chain crystalline polymers and bounding force is reduced; but because of the not completely dissolve of its bounding force; thus only otherwise apply large external force, namely fixing machined object 200 is continued by the 2nd binder layer 4.
After machined object 200 is peeled off from pedestal 100 together with adhesive tape 1, adhesive tape 1 is heated to the temperature of more than the fusing point of the 2nd Side-chain crystalline polymers, the bounding force of the 2nd binder layer 4 is reduced, as shown in Fig. 2 (c), machined object 200 is peeled off from adhesive tape 1 toward the direction of arrow B.Now, adhesive tape 1 is not easy to produce cull at machined object 200, thus matting can be simplified or omit.
(embodiment)
Below enumerate synthesis example and embodiment to describe the present invention in detail, but the present invention is not limited in following synthesis example and embodiment.In addition, in below illustrating, " part " refers to weight part.
(synthesis example 1: the 1 pressure-sensitive caking agent)
Using the ratio of 2-EHA 52 parts, methyl acrylate 40 parts, vinylformic acid 2-hydroxy methacrylate 8 parts and the PERBUTYLND (You Inc.) 0.3 part as polymerization starter, join in toluene 200 parts respectively, stir 5 hours at 60 DEG C, make these monomer polymerizations.The weight-average molecular weight of gained multipolymer is 250,000.
(synthesis example 2: the 2 pressure-sensitive caking agent)
Temperature during stirring is set to 55 DEG C to replace 60 DEG C, PERBUTYLND (You Inc.) is set to 0.2 part to replace 0.3 part, solvent is set to ethyl acetate: heptane=7: 3 (weight ratios) replace toluene, in addition, carry out in the same manner as synthesis example 1, polymeric acrylic acid 2-ethylhexyl, methyl acrylate and vinylformic acid 2-hydroxy methacrylate.The weight-average molecular weight of gained multipolymer is 450,000.
(synthesis example the 3: the 1, the 2nd Side-chain crystalline polymers)
Join in toluene 100 parts respectively using the ratio of Behenyl acrylate 40 parts, octadecyl acrylate 35 parts, methyl acrylate 20 parts, 5 parts, vinylformic acid, the dodecylmercaptan 6 parts as chain-transfer agent and the PERHEXYLPV (You Inc.) 1.0 parts as polymerization starter, stir 5 hours at 80 DEG C, make these monomer polymerizations.The weight-average molecular weight of gained multipolymer is 8,000, fusing point is 50 DEG C.
Each multipolymer of synthesis example 1 ~ 3 is shown in table 1.In addition, weight-average molecular weight measures multipolymer by GPC, gained measured value obtained with polystyrene conversion.Fusing point is by obtaining multipolymer DSC the condition determination mensuration of 10 DEG C/min.
[table 1]
1) EHA: 2-EHA, C1A: methyl acrylate, HEA: vinylformic acid 2-hydroxy methacrylate
C22A: Behenyl acrylate, C18A: octadecyl acrylate, AA: vinylformic acid
[embodiment]
The making > of < double-sided adhesive tape
First, each multipolymer, whipping agent and the linking agent that obtain in synthesis example 1 ~ 3 are carried out being obtained by mixing mixture with combination table 2 Suo Shi.In table 2, ratio is the weight ratio after representing solids component conversion.
The the 1st, the 2nd pressure-sensitive caking agent in synthesis example 1 ~ 3 in each multipolymer of gained and table 2 and the relation between the 1st, the 2nd Side-chain crystalline polymers as follows.
1st pressure-sensitive caking agent: synthesis example 1
2nd pressure-sensitive caking agent: synthesis example 2
1st Side-chain crystalline polymers: synthesis example 3
2nd Side-chain crystalline polymers: synthesis example 3
The whipping agent used and linking agent as follows.
Whipping agent: median size is 6 ~ 9 μm and foaming starting temperature is the microballoon whipping agent " 461DU20 " of the EXPANCEL Inc. of more than 90 DEG C
Linking agent: the isocyanate compound " CORONATEL-45E " of Japanese polyurethane industrial
Then, it is 30 % by weight that gained mixture ethyl acetate is adjusted to solids component, obtains coating fluid.Then, the coating solution of gained is also dry in the film-like substrate of the thickness be made up of polyethylene terephthalate 100 μm, obtain double-sided adhesive tape.Drying uses well heater, and carry out the 1st, the 2nd binder layer respectively.Drying conditions is as follows.
1st binder layer: 80 DEG C × 10 minutes
2nd binder layer: 100 DEG C × 10 minutes
In gained double-sided adhesive tape, the 1st, the 2nd binder layer thickness is separately as follows.
The thickness of the 1st binder layer: 20 μm
The thickness of the 2nd binder layer: 10 μm
< assesses >
The stripping strength of assessment gained double-sided adhesive tape, foaming separability, cull and abrasive property.Each appraisal procedure is as follows, and the results are shown in table 2.
(stripping strength)
Assess the 180 ° stripping strengths of the 1st, the 2nd binder layer when the atmosphere temperature of 23 DEG C.First, under the atmosphere temperature of 23 DEG C, make the 1st binder layer be upside, and the 2nd binder layer is fixed on stainless steel plate by commercially available double sticky tape.Then, the polyethylene terephthalate film of thickness 25 μm is attached at the 1st binder layer.Then, use ergograph (loadcell) with the speed of 300mm/ minute by polyethylene terephthalate film from the 1st binder layer 180 ° stripping.According to JISZ0237 mensuration 180 ° of stripping strengths now, the 180 ° stripping strengths of assessment the 1st binder layer when 23 DEG C of atmosphere temperatures.Except double-sided adhesive tape being attached at sapphire glass by the 2nd binder layer, and beyond being peeled off from sapphire glass 180 ° by double-sided adhesive tape, 180 ° of stripping strengths 23 DEG C time of the 2nd binder layer assess in the mode same with the 1st binder layer.Each assessment result to be shown in table 2 " stripping strength " hurdle respectively.
(foaming separability)
First, under the atmosphere temperature of 23 DEG C, by the 1st binder layer, double-sided adhesive tape is attached at ceramic plate.Then, atmosphere temperature is warming up to more than the fusing point of the 1st Side-chain crystalline polymers and make whipping agent expand or foaming temperature, namely 130 DEG C.Now, whether only peel off from ceramic plate because of the weight of adhesive tape own with visual observation double-sided adhesive tape.In addition, evaluation criteria is set as follows.
Zero: peeled off within 120 seconds.
△: peel off more than 120 seconds and within 300 seconds.
×: do not peel off within 300 seconds.
(cull)
First, under 23 DEG C of atmosphere temperatures, each face of double-sided adhesive tape is attached at sapphire glass.Then, double-sided adhesive tape foaming is peeled off atmosphere temperature 130 DEG C by the 1st binder layer, double-sided adhesive tape is peeled off atmosphere temperature 60 DEG C by the 2nd binder layer.Then, the sapphire glass surface after peeling off with visual observation, assesses cull (residue) thus.In addition, evaluation criteria is set as follows.
Zero: observe a little cull (residue) at sapphire glass, but the scope that can not throw into question in practical.
△: observe cull (residue) at sapphire glass.
×: observe a large amount of cull (residue) at sapphire glass.
(abrasive property)
First, under 23 DEG C of atmosphere temperatures, by the 1st binder layer, double-sided adhesive tape is attached at the platform of shredder.Then, by the 2nd binder layer, the tabular machined object be made up of sapphire glass of thickness 635 μm is pasted on double-sided adhesive tape.Then, grinding condition is set as follows.
Shredder: platform size 36 inches
Grinding pressure: 170kgf/ axle
Platform rotation number: 45rpm
Slurries: colloided silica
Abrasive cloth: non-woven fabric type
Atmosphere temperature: 23 DEG C
Heating temp scope during grinding: 23 ~ 45 DEG C
With above-mentioned grinding condition, till machined object being ground to thickness 620 μm.Now, whether produce skew with visual observation the 1st, the 2nd binder layer, assess abrasive property thus.In addition, visual observation is carried out in grinding to grinding.In addition, evaluation criteria is set as follows.
Zero: the 1, the 2nd both binder layers all do not produce skew.
×: 1st, at least one of the 2nd binder layer produces skew
Table 2
Claims (12)
1. a temporary fixed double-sided adhesive tape, it has:
Membranaceous base material,
Be laminated in described base material one side and for the 1st binder layer that is attached at pedestal and
Be laminated in the another side of described base material and the 2nd binder layer for being attached at machined object;
Wherein, described 1st binder layer contains the 1st pressure-sensitive caking agent, the 1st Side-chain crystalline polymers and whipping agent, and can reduce at the temperature of the bounding force of described 1st binder layer more than the fusing point of described 1st Side-chain crystalline polymers;
Described 2nd binder layer contains the 2nd pressure-sensitive caking agent and the 2nd Side-chain crystalline polymers, and can reduce at the temperature of the bounding force of described 2nd binder layer more than the fusing point of described 2nd Side-chain crystalline polymers.
2. temporary fixed double-sided adhesive tape as claimed in claim 1, wherein, the weight-average molecular weight of described 2nd pressure-sensitive caking agent is greater than the weight-average molecular weight of described 1st pressure-sensitive caking agent.
3. temporary fixed double-sided adhesive tape as claimed in claim 1 or 2, wherein, the thickness of described 1st binder layer is greater than the thickness of described 2nd binder layer.
4. the temporary fixed double-sided adhesive tape according to any one of claims 1 to 3, wherein, described 1st pressure-sensitive caking agent and described 2nd pressure-sensitive caking agent are by the multipolymer by 2-EHA, methyl acrylate and vinylformic acid 2-hydroxy methacrylate polymerization gained.
5. the temporary fixed double-sided adhesive tape according to any one of Claims 1 to 4, wherein, described 1st Side-chain crystalline polymers and described 2nd Side-chain crystalline polymers are the polymkeric substance of (methyl) acrylic ester polymerization gained of straight-chain alkyl by having carbon number more than 16 to major general.
6. the temporary fixed double-sided adhesive tape according to any one of Claims 1 to 5, wherein, described 1st Side-chain crystalline polymers and described 2nd Side-chain crystalline polymers are by the multipolymer by Behenyl acrylate, octadecyl acrylate, methyl acrylate and acroleic acid polymerization gained.
7. the temporary fixed double-sided adhesive tape according to any one of claim 1 ~ 6, wherein, the described fusing point of described 1st Side-chain crystalline polymers and the described fusing point of described 2nd Side-chain crystalline polymers are more than 45 DEG C and are less than 55 DEG C.
8. the temporary fixed double-sided adhesive tape according to any one of claim 1 ~ 7, wherein, described whipping agent is microballoon whipping agent, this microballoon whipping agent possess hollow form polymer shell that median size is micron dimension, with the heating bulking substances enclosing described polymer shell inside.
9. the temporary fixed double-sided adhesive tape according to any one of claim 1 ~ 8, wherein, described 1st binder layer is 2 ~ 16N/25mm when the atmosphere temperature of 23 DEG C to 180 of polyethylene terephthalate film ° of stripping strengths;
Described 2nd binder layer is 0.5 ~ 10N/25mm when the atmosphere temperature of 23 DEG C to 180 of sapphire glass ° of stripping strengths.
10. the temporary fixed double-sided adhesive tape according to any one of claim 1 ~ 9, it also possesses the 1st demarcation membrane being laminated in described 1st adhesive layer surface and the 2nd demarcation membrane being laminated in described 2nd adhesive layer surface.
The method of temporarily fixing of 11. 1 kinds of machined objects, it possesses following operation:
From the state via the temporary fixed double-sided adhesive tape according to any one of claim 1 ~ 10 machined object is temporarily fixed on pedestal, described temporary fixed double-sided adhesive tape be heated to more than the fusing point of described 1st Side-chain crystalline polymers and make the temperature that described whipping agent expands or foams, the operation by described machined object is peeled off from described pedestal together with described temporary fixed double-sided adhesive tape:
Described temporary fixed double-sided adhesive tape is heated to the temperature of more than the fusing point of described 2nd Side-chain crystalline polymers, by the operation that described machined object is peeled off from described temporary fixed double-sided adhesive tape.
The method of temporarily fixing of 12. machined objects as claimed in claim 11, wherein, described machined object is sapphire glass.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013079354 | 2013-04-05 | ||
| JP2013-079354 | 2013-04-05 | ||
| PCT/JP2014/058477 WO2014162943A1 (en) | 2013-04-05 | 2014-03-26 | Temporary fixing double-sided adhesive tape and temporary fixing method for workpiece using same |
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| Publication Number | Publication Date |
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| CN105073932A true CN105073932A (en) | 2015-11-18 |
| CN105073932B CN105073932B (en) | 2017-09-22 |
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| CN201480018793.8A Active CN105073932B (en) | 2013-04-05 | 2014-03-26 | The method of temporarily fixing of interim fixation double-sided adhesive tape and the machined object using the adhesive tape |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6346170B2 (en) |
| KR (1) | KR102195502B1 (en) |
| CN (1) | CN105073932B (en) |
| TW (1) | TWI636112B (en) |
| WO (1) | WO2014162943A1 (en) |
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| CN108300370A (en) * | 2016-09-09 | 2018-07-20 | 霓达株式会社 | Thermo-sensitive bonding sheet and the manufacturing method for using its chip |
| CN108559425A (en) * | 2018-05-11 | 2018-09-21 | 华南协同创新研究院 | A kind of solventless adhesive of anti-FDM print devices warpage, print platform and preparation method thereof |
| CN109070470A (en) * | 2016-04-26 | 2018-12-21 | 日东电工株式会社 | Banker bonding sheet and stacking styling apparatus |
| CN109575833A (en) * | 2017-09-29 | 2019-04-05 | 美贝有限公司 | Mountable article, dual adhesive tape and its installation method |
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| JP6460367B2 (en) * | 2014-03-26 | 2019-01-30 | ニッタ株式会社 | Double-sided pressure-sensitive adhesive tape for temporary fixing and method for temporarily fixing a workpiece using the same |
| JP6390366B2 (en) * | 2014-11-13 | 2018-09-19 | 東洋インキＳｃホールディングス株式会社 | Adhesive composition, method for producing the same, adhesive tape |
| JP2016199725A (en) * | 2015-04-14 | 2016-12-01 | ニッタ株式会社 | Temperature-sensitive adhesive sheet for producing ceramic electronic component and method for producing ceramic electronic component |
| KR20210061717A (en) | 2019-11-20 | 2021-05-28 | 엘지디스플레이 주식회사 | Display device |
| KR102381023B1 (en) * | 2020-05-28 | 2022-03-31 | 주식회사 휴먼텍 | Adhesive film comprising foamed layer |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR102195502B1 (en) | 2020-12-28 |
| TWI636112B (en) | 2018-09-21 |
| KR20150141929A (en) | 2015-12-21 |
| CN105073932B (en) | 2017-09-22 |
| JPWO2014162943A1 (en) | 2017-02-16 |
| WO2014162943A1 (en) | 2014-10-09 |
| TW201502232A (en) | 2015-01-16 |
| JP6346170B2 (en) | 2018-06-20 |
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